HP 470 17 inch G9 Notebook PC - Heat Sink

2. Disconnect the fan cable from the system board (2), and then remove the fan assembly from the
computer (3).
To install the fan or fan assembly, reverse this procedure.
Heat sink
To remove the heat sink, use these procedures and illustrations.
Table 5-11
Heat sink description and part number
Description Spare part number
Heat sink for use in models with UMA graphics M53875-001
Heat sink for use in models with discrete graphics M50437-001
Before removing the heat sink, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 30).
2. Remove the bottom cover (see Bottom cover and rubber feet on page 30).
3. Remove the battery (see Battery on page 32).
Remove the heat sink from models with UMA graphics:
1. In the order indicated on the heat sink, remove the four Phillips M2.0 × 2.8 screws (1) that secure the heat
sink to the computer.
2. Remove the heat sink from the computer (2).
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Chapter 5Removal and replacement procedures for authorized service provider parts